The Hamer plate. Relief from Copernicus GLO-30; rivers and lakes from USGS NHD; watersheds from the USGS Watershed Boundary Dataset; roads and city limits from Census TIGER 2024.
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66° on Nov. 11, 2016, the hottest reading for this week of the year since 1948. Next is 65° in 1954.
Hamer’s center stands about 4,800 ft above sea level. Within three miles the land runs from 4,780 ft to 4,930 ft, a difference of 150 ft: gently rolling country. The highest named summit within 15 miles is Cedar Butte, about 5,350 ft, 14 miles northwest.
Under the town center the state geologic map shows Windblown sand deposits, from the Quaternary, less than 2.6 million years old.
The section below crosses 3 rock units mapped at the surface.
Heights every 0.1 mile from the Copernicus GLO-90 surface model; vertical exaggeration about 43×. The colored band under the surface is the rock the state geologic map shows at the surface, not a picture of what lies beneath.
Basalt. Age: Late Pliocene to Pleistocene, less than 3 million years old. About 12 mi of the line.
Sand. Age: Quaternary, less than 2.6 million years old. About 11 mi of the line.
Fine-detrital. Age: Quaternary, less than 2.6 million years old. About 1 mi of the line.
From the USGS State Geologic Map Compilation (Horton and others, 2017), the states’ geologic maps joined at a common scale.
Heights from Copernicus GLO-90 (a surface model: it includes buildings and tree canopy); summits from USGS GNIS; rivers from USGS NHDPlus HR; rock from the USGS State Geologic Map Compilation.
Hamer has a cold semi-arid climate. Summer afternoons average 89° in July; winter nights fall to about 7° in January. A normal year brings about 20 inches of snow; with the rain, that comes to about 9 inches of water.
On November 14 Hamer normally reaches 45° and falls to 18°. The record high is 64°, in 1999; the record low −16°, in 1978. The most rain on this date, 0.28 in, fell in 1991.
Normals 1991–2020 and records since 1948 at Hamer 4 NW, 4 miles northwest. NOAA, through RCC-ACIS.
